//////////////////////////////////////////////////////////////////
// MattiseOS Kernel
// Date: 2008
// Author: Matthew Iselin
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// at your option) any later version.
// 
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
// 
// You should have received a copy of the GNU General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.
//////////////////////////////////////////////////////////////////

// Includes
#include <mattise.h>
#include <stdint.h>

// Functions

// output to a port
void outb( uint16_t port, uint8_t data )
{
	asm volatile( "outb %1, %0" : : "dN" (port), "a" (data) );
}
void outw( uint16_t port, uint16_t data )
{
	asm volatile( "outw %1, %0" : : "dN" (port), "a" (data) );
}
void outl( uint16_t port, uint32_t data )
{
	asm volatile( "outl %1, %0" : : "dN" (port), "a" (data) );
}

// input from a port
uint8_t inb( uint16_t port )
{
	uint8_t ret;
	asm volatile( "inb %1, %0" : "=a" (ret) : "dN" (port) );
	return ret;
}
uint16_t inw( uint16_t port )
{
	uint16_t ret;
	asm volatile( "inw %1, %0" : "=a" (ret) : "dN" (port) );
	return ret;
}
uint32_t inl( uint16_t port )
{
	uint32_t ret;
	asm volatile( "inl %1, %0" : "=a" (ret) : "dN" (port) );
	return ret;
}

// delays long enough for io
void iodelay()
{
	outb(0xEB, 0);
}
